Related Experiment Video
Updated: Feb 7, 2026
12:40
Exploring Cognitive Functions in Babies, Children & Adults with Near Infrared Spectroscopy
Published on: July 28, 2009
21.1K
Multifocal epilepsy in children is associated with increased long-distance functional connectivity: An explorative
Michael Siniatchkin1, Jan Moehring2, Bianca Kroeher2
1Institute of Medical Psychology and Medical Sociology, Christian-Albrechts-University, Kiel, Germany.
Summary
Multifocal epileptic activity in children is linked to increased long-distance brain connectivity. This heightened connectivity may indicate a risk for pathological over-synchronization or result from multifocal epilepsy itself.
Area of Science:
- Neuroscience
- Epileptology
- Functional Neuroimaging
Background:
- Multifocal epileptic activity is a poor prognostic indicator in several epilepsy syndromes, suggesting widespread brain vulnerability.
- The underlying mechanisms driving multifocal epileptic activity remain poorly understood.
- This study explores the role of brain connectivity in the default mode network, thalamus, brainstem, and retrosplenial cortex in multifocal epilepsy.
Purpose of the Study:
- To investigate whether pathological connectivity in specific brain networks predisposes children to multifocal epileptic activity.
- To compare resting-state functional connectivity patterns between children with multifocal and monofocal epilepsies.
Main Methods:
- Electroencephalography-functional Magnetic Resonance Imaging (EEG-fMRI) recordings during sleep in 33 children.
- Analysis of blood oxygenated level dependent (BOLD) signal resting-state functional connectivity in 15 regions of interest.
- Temporal correlation analysis of BOLD signals to assess functional connectivity.
Main Results:
- Children with monofocal epilepsies exhibited connectivity patterns similar to healthy individuals, with strong short-distance and weak long-distance correlations.
- Patients with multifocal epilepsies showed significantly stronger correlations across numerous default mode network regions, thalamus, and brainstem.
- A notable increase in long-distance functional connectivity was observed in children with multifocal epileptic activity compared to those with monofocal epilepsies.
Conclusions:
- Multifocal epileptic activity is associated with generalized increases in long-distance brain functional connectivity.
- This enhanced connectivity might represent a predisposition to pathological over-synchronization or be a consequence of multifocal epilepsy.
- No significant differences in functional connectivity were found between patients with or without Lennox-Gastaut syndrome within the multifocal epilepsy group.
Related Concept Videos
01:18Increasing Function
397
An increasing function exhibits a rise in output values as input values increase. This behavior is depicted graphically as a curve or line that slopes upward from left to right. Such a function satisfies the condition that if x1 < x2, then f(x1) < f(x2), indicating that the function values grow with increasing inputs. This concept is fundamental in understanding growth trends across various domains, such as population dynamics, financial investments, or resource consumption.The...
397
01:17Functions of Connective Tissues
16.9K
Connective tissues perform a broad range of functions in the body. Their primary function is to connect and link different tissues in the body and act as packaging material between tissues. The areolar tissue, a connective tissue prototype, commonly cements various tissue types in diverse body organs. In contrast, adipose tissue cushions internal organs while insulating the body from heat loss.
Hard connective tissues, such as bones and cartilage, provide structure and support to the body.
Hard connective tissues, such as bones and cartilage, provide structure and support to the body.
16.9K
01:29Distance Problem
74
When an object's velocity changes over time, the total distance traveled can be determined by summing small displacement intervals over short increments. This approach approximates the true distance through numerical summation and the use of integral calculus. An estimate of the total displacement can be obtained by measuring velocity at regular intervals and multiplying each value by the corresponding time step.If a runner accelerates over the first three seconds of a race, speed measurements...
74
02:12Short-distance Transport of Resources
17.7K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
17.7K
01:20The Distance Formula
652
In geometry, measuring the direct distance between two points on a plane is essential in various practical and theoretical applications. Whether in navigation, engineering, or computer graphics, determining the shortest path between two locations involves using the distance formula. This formula is derived from the Pythagorean Theorem, which relates the lengths of the sides of a right triangle. On a coordinate plane, the horizontal and vertical distances between two points serve as the legs of...
652
01:15Distance Corrections
297
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
297